For some reason the client didn't approved this idea.
In order to depict the idea about the milk best quality, we created a cow's family tree. As you can see, it looks a bit funny, but also it delivers the main message: "Selected cows - selected milk".
Their names such as "Louisa de Moo-Moo" or "Maria O'Chew" were also meant to emphasize their belongings to the "cow's high society club".